Vibration analysis of a coupled feed system with nonlinear kinematic joints

被引：39
|
作者：
Wang, Wei [1 ]
Zhou, Yanxun [1 ]
Wang, Hao [1 ]
Li, Changyou [1 ]
Zhang, Yimin [1 ,2 ]
机构：
[1] Northeastern Univ, Sch Mech Engn & Automat, 11 Lane 3,Wenhua Rd, Shenyang 110819, Liaoning, Peoples R China
[2] Shenyang Univ Chem Technol, Sch Energy & Power Engn, Shenyang 110142, Liaoning, Peoples R China
来源：
MECHANISM AND MACHINE THEORY | 2019年 / 134卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Nonlinear dynamics; Coupling vibration; Kinematic joint; Feed system; Multi-degree of freedom; LYAPUNOV EXPONENTS; NUMERICAL-ANALYSIS; STIFFNESS; MACHINE; STABILITY; WEAR; DYNAMICS; PENDULUM; GUIDES; MODEL;
D O I：
10.1016/j.mechmachtheory.2019.01.014
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this study, a multi-degree-of-freedom model is developed to investigate the vibration characteristics of a feed system with nonlinear kinematic joints. Linear guide, ball screw, and ball bearing are the main kinematic joints that connect and support the worktable of a feed system. Considering the contact behaviors of rolling balls, contact force is a piece-wise smooth function of displacements of the multi-degree-of-freedom system. In terms of modeling, geometry and material parameters are determined according to the experimental feed system and the model is verified by a dynamic experiment. The motion equations of the system are derived to evaluate the effects of force excitation and screw-nut position on the vibration amplitude and stable state of the vibratory system. With the variation of screw-nut position, there exist jumping phenomena for displacement and deformation amplitude near the resonance frequency region. The hardening and softening type nonlinearity, super harmonic resonance, jumping phenomenon and chaotic motion are strongly attributed to the coupling vibrations. The application of the multi-degree-of-freedom model can supply information to suppress vibration and improve processing precision. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页码：562 / 581
页数：20
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